以至 (yǐ zhì): Down to (Conjunction) — Meaning & Stroke Order

His influence extends across the entire country, down to the most remote mountain villages.

The policy was poorly implemented, down to the point of failing to achieve the expected social benefits.

He was not negligent, down to the fact that the project's failure had other underlying reasons.

Climate change has widespread effects, down to impacting agriculture, the economy, and even the global ecosystem.